bastion host


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bastion host

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bastion host

A computer system in a network that is fortified against illegal entry and attack, because it is exposed to the outside world (the Internet). Bastion hosts are used for services such as website hosting, mail, DNS lookups and FTP transfer and are located on the public side of a perimeter net (DMZ). The name comes from medieval fortresses built with bastions, which were projections out from the wall that enabled more men to gather behind in order to shoot their arrows. See firewall.


Bastion Hosts in a Firewall
In this "screened subnet" firewall architecture, several bastion hosts reside in their own perimeter net, which is protected by screening routers on both ends.
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References in periodicals archive ?
Keyfort will install a bastion host server as well as a managed firewall and VPN service.
Specific areas covered include building a bastion host, backing up and restoring a bastion host, setting up secure remote administration, and auditing, monitoring, and maintaining the perimeter network.
The major improvement in security in this model arises from the fact that external users must pass through the bastion host to obtain services from the internal network.